Hoping for some help. My Sing Along machine starts up ok but starts at ball 2 instead of ball 1. It does this no matter if it's on 3 ball or 5 ball play. The player unit resets to the correct spot (space before the ball 1 rivet.). I don't have the schematics. It must be a switch on either the score motor or the reset bank? (maybe set too close and it's bouncing during start up....) I've looked and cannot find anything out of adjustment. Any ideas?????